EP 0249747 A3 19890927 - HARDENING COMPOSITION FOR THE HARDENING OF AN UREA-FORMALDEHYDE ADHESIVE, AND ITS USE IN THE GLUEING OF CHIPBOARD
Title (en)
HARDENING COMPOSITION FOR THE HARDENING OF AN UREA-FORMALDEHYDE ADHESIVE, AND ITS USE IN THE GLUEING OF CHIPBOARD
Publication
Application
Priority
DE 3616722 A 19860517
Abstract (en)
[origin: EP0249747A2] The hardener composition for urea-formaldehyde resins which may contain up to 20 % by weight of melamine and up to 5 % by weight of phenol, each percentage being based on the total weight of the resin, contains (a) an ammonium salt of an inorganic or organic acid, (b) an acid which does not react with the hardener composition, (c) urea, and optionally (d) a metal salt, an aqueous solution of the hardener composition having a pH >2 but may also have a pH <2 if the hardener composition contains a glycol or a functional derivative thereof.
IPC 1-7
IPC 8 full level
C08G 12/12 (2006.01); C08K 5/21 (2006.01); C08L 61/24 (2006.01); C09J 161/20 (2006.01)
CPC (source: EP)
C09J 161/20 (2013.01)
Citation (search report)
- [A] EP 0150420 A2 19850807 - BASF AG [DE]
- [AD] DE 2037174 A1 19720210 - BORDEN INC
- [AD] DE 2745951 A1 19780413 - TEUKROS AG [CH]
- [A] PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 71 (C-217)[1508], 3. April 1984; & JP-A-58 222 173 (MITSUI TOATSU KAGAKU K.K.) 23-12-1983
Designated contracting state (EPC)
AT BE CH DE FR LI NL
DOCDB simple family (publication)
EP 0249747 A2 19871223; EP 0249747 A3 19890927; EP 0249747 B1 19920527; AT E76653 T1 19920615; DE 3616722 A1 19871119; DE 3779359 D1 19920702
DOCDB simple family (application)
EP 87107055 A 19870515; AT 87107055 T 19870515; DE 3616722 A 19860517; DE 3779359 T 19870515